\documentclass[t]{beamer}
\usepackage{textpos}
\usepackage{ctex}
\usefonttheme{structureitalicserif}
%\setlength{\parindent}{2em}
\title{报告名称}
\subtitle{报告子标题}
\institute{西安交通大学\ 软件学院 }
\author{作者}
\usetheme{Berlin}
\usecolortheme{beaver}
\usefonttheme{structureitalicserif}
 \usepackage{tikz}

 	\addtobeamertemplate{frametitle}{}{%
 	\begin{tikzpicture}[remember picture,overlay]
 	\node[anchor=north east,yshift=-15pt] at (current page.north east) {\includegraphics[height=1.0cm]{xjtu-c}};
 	\end{tikzpicture}
 }
\addtobeamertemplate{title page}{}{
	\begin{tikzpicture}[remember picture,overlay]
		\node[yshift=75pt,xshift=40pt]{\includegraphics[height=2.5cm]{xjtu}};
\end{tikzpicture}
}
\begin{document}
	\frame{\titlepage}
	\section[主要内容]{}
	\frame{\tableofcontents}
	
	%\frame{主要内容}
	\section{报告第一部分}
	\begin{frame}{报告的第一页标题}{第一页的子标题}
				 \vspace{-20pt}%deal with the large space between frame title and content block
		相关的内容
	\end{frame}
\section{结束}
\begin{frame}[c]{结束}
			 \vspace{-20pt}%deal with the large space between frame title and content block
	\centering{\textbf{结\ 束\\ 谢\ 谢}}
\end{frame}
\end{document}